The latest Windows Phone 7 ROM has already been unlocked and has plenty of cool new stuff to check out, including call history and notifications, dialer interfaces, and Office, which we caught a tantalizing glimpse of last week.

You can doubt Microsoft's phone strategy. You can grouse about features they've left out…
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The new image comes as part of the refreshed Windows Phone Developer kit, updated to play nice with the final release of Visual Studio 2010. Though everything's apparently still fairly rough around the edges, the additions might be worth checking out.